Figure 2

Case 7 from the re-operation group. The patient operated on for infratentorial Schwannoma developed supratentorial EDH. Re-operation of EDH evacuation through craniotomy were performed, with further formation of recurrent EDH after the operation. A: Pre-op. MR of patient 7 (saggital, enhanced T1-weighted), showing tumor in the right jugular foramen, with irregular heterogeneous enhancement. The tumor was confirmd as Schwannoma by postoperative pathological examination. B: Post-op. CT scan 5 days after the operation, identifying bilateral occipital EDH. The patient was operated on through right posterior paracentral approach. Bilateral occipital epidural hyperintensive signal could be seen. C: CT scan 7 days after the bilateral occipital epidural hematoma evacuation, identifying recurrent epidural hematoma of the same location.